Diesel trucks are built tough and can last up to five years without issue. However, I've worked on trucks — both professionally and in my garage — for a decade, and I've seen how long they can last ...

The diesel particulate filter (DPF) has continued to improve over its 15-year existence. So have other components of aftertreatment systems (ATS) that help send cleaner exhaust through the DPF.

We appear to be learning from our mistakes in aftertreatment system maintenance, but we still have a way to go before we’re at peace with the things. Strictly speaking, diesel particulate filters, ...